
Robert H. Bunzel has been a Partner of Bartko Pavia LLP for over two decades as an accomplished jury trial lawyer, bench/bar association president, and visionary for the future of this firm. He is proud of overseeing Bartko Pavia's multigenerational growth, which has expanded in antitrust, employment, and IP under his leadership, and will now support the next generation of exceptional firm professionals while Rob remains the firm’s general counsel and bridge to the future.
Rob represents both plaintiffs and defendants in civil, criminal, and regulatory matters such as venture finance, business and shareholder disputes, environmental and employment law, class actions, data breaches, and professional malpractice. He has also handled matters involving the evolving complex areas of healthcare, privacy, and security breaches. Rob’s practice includes representing clients and law firms in professional malpractice claims, ethics issues, bar matters, partner mobility, and fee disputes, as well as in litigation involving the severance of officers, partners, and shareholders across many industries.
His legal work has involved significant international discovery and foreign court appearances, including examinations in Zurich and Lugano, through pioneering requests for civil judicial assistance to Switzerland. He has traveled to Japan, China, and Taiwan to obtain evidence for American civil and criminal proceedings and has represented foreign officials in U.S. legal matters, including heads of State of the Philippines, South Korea, and most recently Egypt.
Rob has represented both for-profit and nonprofit entities and their directors, officers, and shareholders in state and federal litigation and governmental investigations concerning, among other things, antitrust, finance, sports, philanthropic, real estate, technology, and medical issues, including matters involving the Securities and Exchange Commission. He also has achieved recoveries for defrauded parties in Ponzi schemes, including for Trustees in bankruptcy. One of his trials was nationally televised. Rob has testified as an expert witness regarding the standard of care in business litigation and appeared as an expert in the U.K. High Court on the subject of breach of fiduciary duty under California law.
Rob also worked as an Assistant District Attorney for Alameda County, trying numerous cases and learning the skills of jury selection and direct and cross-examination, which serve him well to this day.
Credentials
Education
- University of California College of the Law, San Francisco (formerly UC Hastings), J.D.
- Harvard College, B.A. cum laude
Bar Admissions
- State Bar of California
Court Admissions
- U.S. Supreme Court
- Ninth Circuit Court of Appeals
- United States District Court for the Northern District of California
- United States District Court for the Eastern District of California
- United States District Court for the Southern District of California
- United States District Court for the Central District of California
Recognitions
- Recognized by “Best Lawyers,” Commercial Litigation (2013-2025)
- Named as a Northern California “Super Lawyer” (2005-2025)
- Martindale-Hubbell Peer Review, AV Rating, 5 Stars
- Recognized in the Wall Street Journal as Best Lawyers In Northern California
Experience
- In 2022, Rob was co-lead counsel for a significant California healthcare system defendant in a 5-week antitrust class action jury trial in the Northern District of California, at the close of which the nine-member jury returned a unanimous defense verdict, finding that Rob’s client did not tie its hospital services together, and did not force insurance companies to contract with the system on allegedly anticompetitive terms. The certified class of three million California residents and businesses had sought $411 million in damages which would have been trebled under the antitrust laws. The jury never reached the issue of damages, however, instead finding no violation of law.
- In 2021, Rob won dismissal of all claims against his client, a former Prime Minister of Egypt, in a high-profile Alien Tort Claim case, by proving up complex diplomatic immunity given the client’s later status as a representative to the IMF in New York. Rob has deep experience in this area, having represented former heads of state of the Philippines and South Korea in such cases.
- In 2021, on behalf of a global law firm client, Rob won a $2 million award in arbitration against an insurance company and succeeded in recovering interest and attorneys' fees for his client.
- In 2021 and 2022, Rob tried two probate cases on behalf of Trustees of a $2 billion estate, defeating all claims asserted by a stepdaughter seeking to share in the estate.
- In 2015-2019, on behalf of one of San Francisco’s leading antitrust lawyers, Rob successfully caused dismissal of a lawsuit seeking a multimillion-dollar fee split after successfully challenging out-of-state arbitration over the claim and following related litigation in Maryland district court.
- In 2019, Rob represented a large Northern California healthcare system in an antitrust case brought by the California AG and a certified class, which settled after Rob over two days selected a San Francisco jury.
- In 2017, Rob tried a nonprofit case on behalf of the spouse of the founder of one of California’s largest private foundations related to the direction of the foundation’s mission, resulting in a negotiated settlement.
- In July 2014, Rob obtained an extraordinary writ from the State Court of Appeal, dismissing with prejudice a suit with $4 billion exposure in a data breach case in the healthcare industry. Sutter Health v. Superior Court (2014) 227 Cal.App.4th 1546, review denied Oct. 16, 2014.
- In 2014, Rob finalized a settlement with six counties and the California District Attorneys Association concluding a 5-year investigation into his client’s biomass (wood to energy) waste streams at three California facilities.
- In 2011, Rob secured an $18 million judgment for a major bank’s former investment advisors, and in 2015 he obtained a $7.4 million award for financial advisors suing a different bank, both of which were plaintiff-side class actions.
- In 2010, Rob won a $2 million plaintiff’s jury verdict in a municipal bond financing case.
- Also in 2010, Rob achieved a defense verdict in an 8-week civil antitrust monopolization trial where the plaintiffs asked the jury for $34 million.
- In 2008, Rob cross-examined the government’s star witness over several days leading to the successful defense of a U.S. executive in a criminal antitrust trial where the government had obtained seventeen guilty pleas for international price-fixing from other defendants. Defending “The Last Man Standing”: Trench Lessons from the 2008 Criminal Antitrust Trial, United States v. Swanson (June 2008), www.antitrustsource.com.
- In 2007, Rob won a $4.85 million verdict in a breach of contract case.
- From 2002 to 2007, Rob represented an SEC Receiver and Bankruptcy Trustee in litigation concerning the San Diego PinnFund Ponzi scheme, which resulted in greater than $100 million in recoveries for the injured investors and creditors.
- Rob has successfully represented engineers employed by the nation’s largest hazardous waste facility and obtained a landmark ruling regarding recoverable costs in superfund litigation, which ruling was affirmed by the U.S. Supreme Court.
- Rob represented the San Francisco 49ers in their 1999-2001 ownership dispute and in other player and team matters.
Insights
Press Release
14, May 2025
Bartko Pavia’s Patrick M. Ryan obtains $222 million jury verdict against Walmart
Press Contact
Honors and Awards
01, January 2025
Bartko LLP Attorneys Recognized as Best Lawyers® Award Recipients
We’re proud to announce that four Bartko, LLP attorneys have been named in the 2025 edition of The Best Lawyers in America®. Best Lawyers is the oldest and most respected lawyer ranking service, using a peer-review process to ensure credibility and trust. Since it was first published in 1983, Best Lawyers has become universally regarded as the definitive guide to legal excellence.
Press Release
09, July 2024
BartkoZankel appeared in the first hearing related to 11 coordinated class actions
BartkoZankel appeared in the first hearing related to 11 coordinated class actions brought against the firm’s health care provider client for alleged penalties following the theft of a password protected computer in October 2011. The cases raise novel issues regarding what is a release under the Confidentiality of Medical Records Act (CMIA) and the propriety of class treatment for CMIA claims. Robert Bunzel, Michael Abraham and Simon Goodfellow lead the BartkoZankel team. In re Sutter Medical Information Cases, Judicial Council Coordination No. 4698, Sacramento Superior Court.
Publications
21, May 2024
Rob Bunzel, Publishes Article In The Recorder
Rob Bunzel’s published piece in The Recorder, read PDF copy of the article, highlights the recently released grand jury transcripts of Richard Nixon’s 1975 Watergate testimony over two days. The piece demonstrates how Nixon, with his combination of phenomenal memory, lawyerly tricks, misdirection and humor gave the prosecutors little to work with and give us now a new window on Watergate and the corrupt and colorful characters from that period.
Honors and Awards
21, February 2024
Bartko Wins Top Defense Verdict
San Francisco, CA — The Bartko trial team from the In Re Francesca Naify case received a Daily Journal award as one of California’s top five defense verdicts in 2023, and the top trust and estate case verdict. Ben Riley, Rob Bunzel, and Sony Barari tried the case over five weeks, with 93 hours of testimony. The case involved deceased United Artists theater tycoon Robert Naify and claims by his step-daughter that Naify did not provide his deceased wife with her full share of his $2.3 billion in assets. The trial presented cutting-edge principals of probate and community property law, and a total damages claim of $680 million.
Honors and Awards
10, November 2023
Five Bartko Lawyers Recognized as 2024 Best Lawyers® Award Recipients
Bartko LLP is pleased to announce that five lawyers have been included in the 2024 edition of The Best Lawyers in America®. Since it was first published in 1983, Best Lawyers has become universally regarded as the definitive guide to legal excellence.
Honors and Awards
08, November 2023
Bartko Ranked Top Litigation Boutique
The firm is proud to be recognized in the November 1, 2023 Supplement to the Los Angeles and San Francisco Daily Journal as one of the “Top Boutiques” in California. In the article, Patrick M. Ryan is quoted as saying: “We thrive on representing both plaintiffs and defendants in major complex cases and believe it makes us better trial lawyers. Working both sides of the courtroom makes us very skilled at the chess match that is high-stakes litigation, putting us in a position to be several steps ahead of our opponents.” In addition, Bartko recently celebrated its 45th Anniversary at their future office building on Sansome Street. See Top Boutiques 2023 article (PDF) to learn more about the firm’s new leadership and the passing of the torch in 2024 from name partner, Robert H. Bunzel, to co-managing partner and head of litigation, Patrick M. Ryan, and CEO and co-managing partner, An Nguyen Ruda.
Honors and Awards
01, November 2023
Daily Journal recognizes Bartko as one of the “Top Boutiques” in California
The firm is proud to be recognized in the November 1, 2023 Supplement to the Los Angeles and San Francisco Daily Journal as one of the “Top Boutiques” in California. In addition, Bartko recently celebrated its 45th Anniversary at their future office building on Sansome Street. See attached pdf article to learn more about the firm’s new leadership and the passing of the torch in 2024 from name partner, Robert H. Bunzel, to co-managing partner and head of litigation, Partick M. Ryan, and CEO and co-managing partner, An Nguyen Ruda.
Press Release
07, February 2023
Bartko Clients Win $680 Million Francesca Naify Case
The San Francisco Superior Court entered its Statement of Decision and Judgment in favor of Bartko clients, the Co-Trustees of the Robert A. Naify Trust, and against Petitioner Christina Cortese. Cortese had sought as much as $680 million in community property damages on behalf of her deceased mother. The Court’s Statement of Decision rejected all of Ms. Cortese’s claims and damages, and Judgment has been entered for the Co-Trustees.
Honors and Awards
18, November 2022
Five Bartko Lawyers Named to 2023 Best Lawyers® List
Bartko is pleased to announce that five lawyers have been included in the 2023 edition of The Best Lawyers in America®. Since it was first published in 1983, Best Lawyers has become universally regarded as the definitive guide to legal excellence.
Publications
Rob has lectured for the Practicing Law Institute and the Association of Business Trial Lawyers on the subject of internal corporate investigations and international discovery. He has presented on panels for the American Bar Association Litigation Committee on environmental litigation.
- Courtroom warrior: The combative career of William Travers Jerome
San Francisco Daily Journal (May 2020) - The man to see was Edward Bennett Williams
San Francisco Daily Journal (December 2019) - Lessons learned from ‘The Trial of Jack Ruby’
San Francisco Daily Journal (June 2019) - Sometimes It Pays to Opt for a Jury in Business Disputes
Litigation Magazine, Vol. 45, No. 4 (Summer 2019), at 12 - Lawyers: Put down the electronic legal menu for just a moment
San Francisco Daily Journal (October 2018) - How to Win the “Bet Your Company” September 2010
- Defending “The Last Man Standing”: Trench Lessons from the 2008 Criminal Antitrust Trial – United States v. Swanson
www.antitrustsource.com (June 2008)
Areas of Focus
Practices
Insights & News
Publications
05, September 2025
Client Alert: Texas Telemarketing Law Expands To Texts - Key Requirements
Effective September 1, 2025, SB 140 expands Texas’ telemarketing law to cover SMS/MMS and image messages. Businesses who send marketing texts from Texas or to persons located in Texas must register with the Texas Secretary of State ($200 filing fee; $10,000 security deposit).
Speaking Engagements
04, September 2025
An Nguyen Ruda and Josiah Jenkins Present for the San Francisco Employer Advisory Council
Bartko Pavia's CEO & Co-Managing partner An Nguyen Ruda and associate Josiah Jenkins will present for the (SF EAC) California Employer Advisory Council on DEI: A New Four-Letter Bad Word and What It Means in this New Environment on September 11th, in San Francisco. This seminar features discussions on the latest legal changes impacting DEI programs, compliance strategies and risk-reduction tacticsand how to design DEI initiatives that align with today’s shifting landscape
Media Mentions
07, August 2025
Law360 Spotlights Ian Papendick’s Arrival at Bartko Pavia
Ian Papendick, a seasoned antitrust attorney and former enforcer with the Colorado Attorney General’s Office, was recently featured in Law360 following his arrival at Bartko Pavia LLP as a litigation and antitrust partner.
Press Release
30, October 2025
An Ruda Serves as Judge at the Berkeley Female Founders & Funders Summit
Media Mentions
27, October 2025
Press Release
09, October 2025
Steve Vieux to Chair the California Lawyers Association’s Golden State Institute
Press Release
08, October 2025
Melissa Harvey to Present at ICSC on Non-Retail Development in Shopping Centers
Publications
06, October 2025
Meredith Vanderbilt Publishes Article in AHLA Health Law Weekly on FDA Drug Shortage Tracking
Press Release
03, October 2025
Howland Gordon to Participate in ICSC Mock Negotiation on Anchor Exclusives
Press Release
29, September 2025
ABA Antitrust Plaintiffs’ Roundtable Will Feature Insights from Ian Papendick
Press Release
24, September 2025
Honors and Awards
23, September 2025
Patrick M. Ryan Earns Repeat Recognition as 2025 Top 100 Lawyer
Publications
05, September 2025
Client Alert: Texas Telemarketing Law Expands To Texts - Key Requirements
Effective September 1, 2025, SB 140 expands Texas’ telemarketing law to cover SMS/MMS and image messages. Businesses who send marketing texts from Texas or to persons located in Texas must register with the Texas Secretary of State ($200 filing fee; $10,000 security deposit).
Speaking Engagements
04, September 2025
An Nguyen Ruda and Josiah Jenkins Present for the San Francisco Employer Advisory Council
Bartko Pavia's CEO & Co-Managing partner An Nguyen Ruda and associate Josiah Jenkins will present for the (SF EAC) California Employer Advisory Council on DEI: A New Four-Letter Bad Word and What It Means in this New Environment on September 11th, in San Francisco. This seminar features discussions on the latest legal changes impacting DEI programs, compliance strategies and risk-reduction tacticsand how to design DEI initiatives that align with today’s shifting landscape
Media Mentions
07, August 2025
Law360 Spotlights Ian Papendick’s Arrival at Bartko Pavia
Ian Papendick, a seasoned antitrust attorney and former enforcer with the Colorado Attorney General’s Office, was recently featured in Law360 following his arrival at Bartko Pavia LLP as a litigation and antitrust partner.
Press Release
30, October 2025
An Ruda Serves as Judge at the Berkeley Female Founders & Funders Summit
Media Mentions
27, October 2025
Press Release
09, October 2025
Steve Vieux to Chair the California Lawyers Association’s Golden State Institute
Press Release
08, October 2025
Melissa Harvey to Present at ICSC on Non-Retail Development in Shopping Centers
Publications
06, October 2025
Meredith Vanderbilt Publishes Article in AHLA Health Law Weekly on FDA Drug Shortage Tracking
Press Release
03, October 2025
Howland Gordon to Participate in ICSC Mock Negotiation on Anchor Exclusives
Press Release
29, September 2025
ABA Antitrust Plaintiffs’ Roundtable Will Feature Insights from Ian Papendick
Press Release
24, September 2025
Honors and Awards
23, September 2025
Patrick M. Ryan Earns Repeat Recognition as 2025 Top 100 Lawyer
Publications
05, September 2025
Client Alert: Texas Telemarketing Law Expands To Texts - Key Requirements
Effective September 1, 2025, SB 140 expands Texas’ telemarketing law to cover SMS/MMS and image messages. Businesses who send marketing texts from Texas or to persons located in Texas must register with the Texas Secretary of State ($200 filing fee; $10,000 security deposit).
Speaking Engagements
04, September 2025
An Nguyen Ruda and Josiah Jenkins Present for the San Francisco Employer Advisory Council
Bartko Pavia's CEO & Co-Managing partner An Nguyen Ruda and associate Josiah Jenkins will present for the (SF EAC) California Employer Advisory Council on DEI: A New Four-Letter Bad Word and What It Means in this New Environment on September 11th, in San Francisco. This seminar features discussions on the latest legal changes impacting DEI programs, compliance strategies and risk-reduction tacticsand how to design DEI initiatives that align with today’s shifting landscape
Media Mentions
07, August 2025
Law360 Spotlights Ian Papendick’s Arrival at Bartko Pavia
Ian Papendick, a seasoned antitrust attorney and former enforcer with the Colorado Attorney General’s Office, was recently featured in Law360 following his arrival at Bartko Pavia LLP as a litigation and antitrust partner.